Electric switch.



W. s. MAYER. ELECTRIC SWITCH.

APPLIATION FILED JAN. 2, 1907.

ANT OFFICE.

WLTEHS. MAYEB, OF PHILADELPHIIA, PENNSYLVANIA,YASSIGNOR T0 THE MACHEN ,da MAYEB- ELECTRICAL MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYL- VANyA CORPORATION OF NEW JERSEY. i

ELECTRIC SWITCH.

armas.

' Specification of Letters Patent. Application led January 2, 1907. Serial No. 350,329.

Patented oet. 4, 191e.

To all 'whom 'it 'may 4 it known that I, WALTER S..MAYER, a

citizen of the Unitedv States, residing in the. cityV and county of Philadelphia, State of Pennsylvania, havel invented certain new 'and useful rImprovements in Electric Switches, of which the followingis a specification.. y v f j ltyinventio'n relates to an improvement in velectric switches of -the'character in which two push'buttons are employed and bythe movement of either one ozt which a sprung is placed under tension, which, when released, occasions rapid movement of certain parts 'of the device tojbring them either into or out of contact with certain other parts ofthe said'device, whereby an electric current may -.be either'closed or broken.lv

. ln order vthat my invention .may be more readily understood, reference is to be had to the accompanying drawings, in which,

v'Figure 1' is a transverse section of a suitable receptacle-or case, thejoperating parts of the device being shown 1n elevation; Fig.

2 is a view showing in elevation certain of f the operative parts shown in Fig. 1, certain other 'of' thesaid parts being removed; Fig.

-3 is an elevation looking to the left in Fig.

same; Fig. 8` is an end view of a stop which is adapted to be engaged by the trigger catch; Fig. 9 is a side view of the said stop; Fi 10 isl aside elevation of a binding post an a contact brush secured thereto; and Fig. 11vis a view looking to the left 1n Fig'io.

i ln the drawings, 1 designates'a cup-sh aped receptacle or casing of porcelain or other suitable material, to which is connected the various operative parts of Amy improved switch;A f Y j .f ,n

2 designates Ja plate which is fastened to the wall or anyother suitable object at the totheplate2. .t rlhe plates 2 and 3 are provided with holes- .at suitable pontsthrough 'which thefreely point at which the switch is to be used.

3 designates a face plate which is attached movable buttons 4 and 5 respectively proj ect.

8 and 9 designate lugs which project downwardly from the plate 2.

10v designates a shaft which is journaled in the downwardly rojectinuI lugs 8 and 9, the opposite. ends ol) the saida shaft extending throu h and beyond 4the opposite sides of the saiV lugs-8 and 9.

12 designates `an oscillating U-shaped member (which may be designated a controller) journaled upon the shaft 10, .which member or controller is u'ovided with arms f 14 and l5 which exten in opposite directionsfrom one of the legs or sides of the said member, and to which the lower ends of the ush buttons 4.- and 5 are respectively pivotal y connected, as most clearly shown in Fig. 2 ofthe drawings. The U-shaped oscillating member 12 is located interme- 'diate or between the downwardly projecting lugs 8 and 9 upon which the shaft 10 is journaled. 16 designates a spring which is'coiled around the shaft between vthe op- -posite legs of the said U-shaped oscillating member 12, the opposite ends of the said spring bein crossed or extending past each other and ownwardly upon opposite sides of the bridge portion of the said U-shaped member 12, as indicated in the drawings.

designates a U-shaped trigger catch or shifteralso supported upon the shaft 10. The opposite legs of the member 2() are located upon opposite sides ofthe lugs 8 vand 9, as indicated in Fig. 3 of the drawings. One leg of the said U-shaped member 20 is extended, as indicated at 21 in the drawings, and is provided with a projection 22, which is adapted to engage the outer free end of a pivoted stop lever 23, which is pivoted at one end to a ylug or bracket on the downwardly projecting lug 9. The free end of the stop,lever projects through an openinfr24 in the plate 8. The upper edge of the lever 23V is provided with a lug 25 which projects into-a coiled spring 26, one end of which .abuts against the inner or lower side of the plate 2, the other end of which surrounds the lug or projection 25 and abuts against the upper edge ofv the said stop lever 23. f

30 designates a rise or cam projection extending upwardly from one of thelegs of i the' U-shaped controller or member 12, and v which rise or projection is adapted v'to con-` the spring 26 occasions downward movement of the stop lever 23 into the one or the 'other of the depressions between the rise 30 and the arms 14 or 15 of the oscillating member 12, so as to carry the outer end of the said lever out* of alinement with the said flange to permit movement of the member 20. The bridge of the U-shaped member 20, as inthe case of the bridge of the U- shaped member 12, is'located between the ends of the coiled spring 16, as indicated in the drawings.

The contact arms or poles 35 are rigidly connected to the U-shaped trigger catch member or shifter 20 but are insulated therefrom. Being rigidly connected to the said member 20, it is obviousthat the said poles which are adapted to contact with or engage the spring brushes to be hereinafter referred to and described `move in unison with the said trigger catch member 20. v

In order to limit the pivotal or oscillating movement of the U-shaped member 20,1 have provided the downwardly and outwardly projecting lugs or ears 36 upon the lower end of the lug 8. It will be observed that the bridge portion of the U-shaped member 2O is Iocated between the said lugs and adapted to contact with them, its swinging pivotal movement being in this manner limited.

40 designates binding posts which are secured b'y means of screws 41 to the casing or receptacle 1.

42 designates binding screws which are adapted to engage screw-threaded perforations in the binding posts 40 and by means of which the line wires are connected to the said binding posts.

43 designates upturned projections, the purpose of which is to prevent the spreading of the wires or cords which are con.- nected to the binding posts. i

45 designates spring brushes having spring contact portions 46 at their inner ends. These brushes are constructed of relatively thin metallic sheets, which arebent in the manner illustrated most clearly in Figs. l0 and 11 of the drawings, so as to bring the spring contact portions 46 of each brush into Ijuxtaposition so that when a pole is moved into position between the .said contact portions, such pole will be in engagement with each of them.

bridge or base portions to the. binding posts 40; the connection being made at 47, as in- The brushes 45 l are 1llustrated as being connected at their i dicated in Fig. 11 of the drawings. It will be observed upon jan examination of Fig. 1

y of the drawings, that the spring arms to which the contact portions 46 are connected Vextend upwardly or 'downwardly from the base or bridge portions which 'are connected to the binding posts, depending upon the fact as 'to whether the contact brushes are turned so that one edge or the other thereof is on top. By reason of the particular relative arrangement between the sald base portion and the spring arms 45, the Vbrushes may be used upon either side of the device.

That is, by reason of the particular construction shown, the contact, brushes are reversible or interchangeable. It will be noted that the points of supportof the brushes 45 are in substantial alinement with the shaft 10 upon which the contacts 35, the controller v 12, and the shifter 20are pivoted, and that the spring arms of one of the said brushes extend upwardly and inwardly and that the spring arms of the other of said brushes extend downwardly and inwardly.' In the position shown in Fig. 1, the contacts 35 lie in a plane intermediate the brushes 45, while in Fig. 2 the contacts have been moved into positionto engage the spring contact portions 46 of the spring brushes 45. By reason of the construction and arrangement of `parts as illustrated, I am enabled touse a very shallow box to contain the operative parts of my device.

In the operation 'of my improved switch, one of the push buttons 4 or 5 is depressed, occasioning movement of the ,Up-shaped member 12, with the result that thespring 16 is placedunder tension, by reason of the fact that the vbridge portion of the said member moves aoainst and occasions a winding movement ot one end ofthe said spring, the other end thereof being held stationary by the member 20. Inasmuch as one end.

of the spring is held stationary by the U- shaped member 20, when the other end jisA subjectedto va winding movement and pressure, it will be understood that pressure will y be exerted uponthe said member tending tov .occasion movement ot 1t in kone dlrection. Movement, however,.is prevented by reason' of the fact that as the member12 is turned about its pivot, the rise `30 thereof engages t-he edgev of the pivoted sto lever 23, raising and holding the. same in ainement with the projection 22, thus preventing movement of the member 20 and of the poles 35 connected thereto. A When, however,. the button 4 or 5, as the case may be, is depressed a' 'suiicient distance to carry the rise beyond or past the stop lever 23, the latter, by reason of the expansion of the spring 26, is pushed or moved down into the depression between the said rise 30 and the arm 14 or 15 which has been raised. In moving to this position, the outer free end oil the stop lever 23 upon the member 20, so that the spring 16 invun'winding to return to normal tension snaps the member 20 together with the poles connected thereto into a position in which ,they are either in Contact with the Contact .springs 46 or else vereout of Contact with the said .springs,`vvhich` latter position is illustrated in Fig. l o the drawings. 'y

The brood Subject-metter of invention disclosed herein and not claimed, is claimed in my copendi'ng applicationled August 26,

1907, Serial No.'390-51159.A

' Having thus described my invention, l cleim- Y f y f In l:i 'device of the character described, the

combination of a pivot, contacts Supported upon the seid pivot, means for occasionilg :nm/'ement' o1c the seid contacts, and contact springe supported. in substantially horizon tall elinen'ient with the'said pivot upon op-.

as my invention., l have hereunto' Signed my` nnmefliis 26th. day of December, A.' D.19OG.

y VVALTER'S. MAYER. ln the presence of`v HARRY F. AlufBLEn7 LAURA lLnINFELDER. 

